Shock-absorber.



F. L. REYNOLDS SHOCK ABSORBER.

APPLICATION men MM. 11. 1914.

5 1 9 1 90 1 r p A m m, R a P SHOCK-ABSORBER.

Specification of Letters Patent.

Patented ell-pr. I3, ltlllld.

Application filed March 17, 1914.. Serial No. 825,295.

Tocll whom it may concern:

Be it known that I, FLOYD L. REYNOLDS,

a citizen'of the United States, residing at Middleton, in the county of Gratiot and State of Michigan, have invented new and useful Improvements in Shock-Absorbers, of which the following is a specification.

This invention relates to shockabsorbers being especially desied for use on automobiles, motor trucks and the like but as well. adapted fon use: onany wheeled. vehicle inwhich the body of the vehicle is sup ported relatively to the running gear by means of springs.

A further object of the present invention is to produce a simple and inexpensive shock absorbing device of the class referred to embodying a piston and cylinder with means for attaching said elements to difl'erent parts of a vehicle, and means for regulating the rapidity of the flow of oil or other liquid with which the cylinder is filled, from the space at one side of the piston to'the space at the other side thereof, combined with means for adjusting the size of the communicating ports between the chambers at opposite sides of the piston.

With the above and other objects in view, the invention consists in the novel construc: tion, combination and arrangement of parts,

- as will hereinafter be more fully described,

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illustrated and claimed.

In the accompanying drawings ;--Figure 1 is a vertical diametrical section through the shock absorber of this invention. Fig. 2 is a cross section on the line 22 of Fig. 1. Fig. 3 is a cross section on the line 33 of Fig. 1. w

In carrying out the present invention I employ a cylinder 1 provided with heads 2 and 3 preferably made separate therefrom and threaded thereon as at 4, one of said heads beingimperforate and the other head being formed with a central opening 5 through which works a reciprocatory plunger 6 of tubular form,

ll Iounted fast on the tubular plunger 6 is a piston 7 having a liquid-tight fit at its peripher with the inner wall of the cylinder 1. he piston 7 is provided at one or more points with ports 8 extending through the same from one side to the other each of said ports being controlled by a check valve 9 which is arranged to allow the liquid to move upward while preventing the down ward movement thereof in order to restrain the rebound of the springs of the vehicle with which the shock absorber is associated.

In. the preferred embodiment of the invention the tubular plunger 6 is threaded through-the piston 8'as shown at 10 and additionally held by means of a lock nut 11.

In close proximity tothe piston 7 the tubular plunger 6 is provided at opposite points Withports 12 to allow the liquid to pass to the bore of the tubular plunger 6 and outwardly through the lower end theieof into thebottom chamber of the cylinder below the piston 7. The plunger 6 passes through a Stu-fling box 13 on the cylinderhead 2 and it is also preferred to fasten rubber cushions or bumpers 14 to the last named cylinder head to prevent said head from coming in injurious contact with some portion of the frame or body of the vehicle.

At its outer end the plunger 6 is provided with a head flange 15 preferably threaded thereon as shown and connected to the flange 15 is an attaching device shown in the form of a loop or clip 16 adapted to embrace the spring 17 of the vehicle or any other suitable part of such vehicle. Another attaching device 18 of any suitable construction is fastened to the opposite cylinder head 3 for a like purpose.

Extending longitudinally within the plunger 6 is a valve 19 shown in the form of a rod having a snug fit within the tubular plunger to adapt it to be turned as willhereinafter ap ear. .lhe lower end of the valve 19 is mova le across the ports 12 of the plunger and the opposite end portion of the valve is threaded as shown at 20 through the upper extremity of the plunger 6 so that by turning said valve, the lower extremity thereof may be advanced and retracted for the purpose of regulating the size of the ports 12 and thereby correspondingly varying the flow of the liquid from one side of the piston to the other. At its upper extren iity the valve 19 has a head 21 fast thereon, said head having its periphery notched or serrated as at 22 to be engaged by a looking pawl or detent 23 shown as pivotally mounted at 24 on the attaching device or clip 16 above referred to. It will now be seen that b turning the valve 19 with the aid of the ead 21, the size of theports 12 may be regulated to suit the load imposed on the shock absorber. In the downward movement of the vehicle body, the liquid which preferably consists of oil of suitable density passes freely upward through the port or ports 8, passing the check valves 9 and entering the upper portion of the cylinder 1. Upon the upward rebound of the vehicle body, the valve or valves 9 immediately close and the oil or other liquid can only pass to the lower side of the piston 7 through the ports 12 the size of which has been previously adjusted by the means hereinabove described.

What I claim is A shock absorber comprising acylinder provided with attaching means, a piston in said cylinder provided with a port, -a tubular plunger having a port in its side and passing through said piston and one head of said cylinder and provided with attaching means and also having a reduced and threaded bore at its outer extremity, a check consisting of a rod having its outer end portion reduced in diameter and threaded and extended through said reduced bore of the plunger, the innerextremity of said rod being adjustable across the side port of the plunger, a notched head on one end of said valve, and a detent mounted on the attaching'means of the plunger and adapted to engage and prevent.said' head from turning.

valve for the port in said piston, a valve In testimony whereof I aflix my signature in presence of two witnesses.

FLOYD L. REYNOLDS.

Witnesses:

ZEHNA Orro, E. H. NALDRE'I'I. 

